JP6954957B2 - Insulated wires and cables - Google Patents
Insulated wires and cables Download PDFInfo
- Publication number
- JP6954957B2 JP6954957B2 JP2019120614A JP2019120614A JP6954957B2 JP 6954957 B2 JP6954957 B2 JP 6954957B2 JP 2019120614 A JP2019120614 A JP 2019120614A JP 2019120614 A JP2019120614 A JP 2019120614A JP 6954957 B2 JP6954957 B2 JP 6954957B2
- Authority
- JP
- Japan
- Prior art keywords
- flame
- layer
- retardant
- less
- inner layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Insulated Conductors (AREA)
Description
本発明は、絶縁電線及びケーブルに関する。 The present invention relates to insulated wires and cables.
電子機器類の内部配線に使用される絶縁電線は、機器の発火事故などに際して電線を伝って火が広がらぬように難燃性を有することが求められている。内部配線材の難燃性の基準は、例えば米国のＵＬ７５８規格等で定められている。 Insulated electric wires used for internal wiring of electronic devices are required to have flame retardancy so that the fire does not spread through the electric wires in the event of a fire accident of the equipment. The flame retardancy standard of the internal wiring material is defined by, for example, the UL758 standard in the United States.
一方で、鉄道車両網が発達している欧州ではＥＮ規格（欧州規格）と呼ばれる地域統一規格の採用が広がっており、耐摩耗性、耐加水分解性、難燃性、耐熱性、低発煙性、電気特性（直流安定性）を備えた材料の使用が求められている。 On the other hand, in Europe, where the railroad vehicle network is well developed, the adoption of a regional unified standard called the EN standard (European standard) is spreading, and wear resistance, hydrolysis resistance, flame retardancy, heat resistance, and low smoke emission are widespread. , The use of materials with electrical characteristics (DC stability) is required.
このような規格の要求に応えるため、従来、電線やケーブル等に使用される樹脂組成物として、水酸化マグネシウム、水酸化アルミニウム等の金属水酸化物が添加された難燃性樹脂組成物が用いられている(例えば、特許文献１参照)。 In order to meet the requirements of such standards, flame-retardant resin compositions to which metal hydroxides such as magnesium hydroxide and aluminum hydroxide have been added have been conventionally used as resin compositions used for electric wires and cables. (See, for example, Patent Document 1).
特許文献１には、導体と、該導体上に、変性ポリ（２，６−ジメチルフェニレンエーテル）を主成分とするベースポリマー１００重量部に対して、少なくとも焼成クレー１０〜１００重量部を添加した樹脂組成物を被覆した内層と、更にその上に、ポリエステル樹脂を主成分とするベースポリマー１００重量部に対して、ポリエステルブロック共重合体５０〜１５０重量部、加水分解性抑制剤０．５〜３重量部、水酸化マグネシウム１０〜３０重量部から構成されるポリエステル樹脂組成物を被覆した外層を備える多層絶縁電線が開示されている。 In Patent Document 1, at least 10 to 100 parts by weight of baked clay was added to a conductor and 100 parts by weight of a base polymer containing modified poly (2,6-dimethylphenylene ether) as a main component on the conductor. 50 to 150 parts by weight of the polyester block copolymer and 0.5 to 0.5 to the hydrolyzable inhibitor with respect to 100 parts by weight of the base polymer containing the polyester resin as a main component on the inner layer coated with the resin composition. A multilayer insulated wire having an outer layer coated with a polyester resin composition composed of 3 parts by weight and 10 to 30 parts by weight of magnesium hydroxide is disclosed.
しかしながら、難燃剤として金属水酸化物を多く含む難燃層は、吸水により絶縁破壊が起こりやすく、電気絶縁層としては機能しないため、内層として電気絶縁層を設ける必要がある。 However, the flame retardant layer containing a large amount of metal hydroxide as a flame retardant is liable to undergo dielectric breakdown due to water absorption and does not function as an electrical insulating layer. Therefore, it is necessary to provide an electrical insulating layer as an inner layer.
最近では特に絶縁電線やケーブルに細径化が求められているが、従来の上記構成では、細径化の要求に応えることが困難であった。 Recently, insulated electric wires and cables are particularly required to have a smaller diameter, but it has been difficult to meet the demand for a smaller diameter with the above-mentioned conventional configuration.
そこで、本発明の目的は、難燃剤として金属水酸化物を多く含む難燃層を有していても、細径化が可能な絶縁電線及びケーブルを提供することにある。 Therefore, an object of the present invention is to provide an insulated electric wire and a cable whose diameter can be reduced even if the flame retardant layer contains a large amount of metal hydroxide as a flame retardant.
本発明は、上記目的を達成するために、下記の絶縁電線及びケーブルを提供する。 The present invention provides the following insulated wires and cables in order to achieve the above object.
［１］導体と、前記導体の外周に設けられた、金属水酸化物を含有する難燃内層と、前記難燃内層の外周に設けられた水分浸入防止層とを備え、
前記水分浸入防止層の外周に設けられた難燃外層を備える絶縁電線であって、
前記難燃外層は、ベースポリマと金属水酸化物を含み、前記ベースポリマ１００質量部に対して前記金属水酸化物を１５０質量部以上２５０質量部以下含有する絶縁電線。
［２］前記水分浸入防止層が、膜厚５μｍ未満の無機物膜からなる［１］に記載の絶縁電線。
［３］前記水分浸入防止層が、膜厚５μｍ未満の金属膜からなる［１］に記載の絶縁電線。
［４］前記水分浸入防止層が、膜厚１０μｍ以上２００μｍ以下の高密度高分子膜又は低密度高分子膜からなる［１］に記載の絶縁電線。
［５］［１］〜［４］のいずれか１に記載の絶縁電線を備えたケーブル。
[1] A conductor, a flame-retardant inner layer containing a metal hydroxide provided on the outer periphery of the conductor, and a moisture infiltration prevention layer provided on the outer periphery of the flame-retardant inner layer are provided.
An insulated wire provided with a flame-retardant outer layer provided on the outer periphery of the moisture intrusion prevention layer.
The flame-retardant outer layer is an insulated wire containing a base polymer and a metal hydroxide, and containing 150 parts by mass or more and 250 parts by mass or less of the metal hydroxide with respect to 100 parts by mass of the base polymer.
[2] The insulated wire according to [1], wherein the moisture infiltration prevention layer is made of an inorganic film having a film thickness of less than 5 μm.
[3] The insulated wire according to [1], wherein the moisture infiltration prevention layer is made of a metal film having a film thickness of less than 5 μm.
[4] The insulated wire according to [1], wherein the moisture infiltration prevention layer is made of a high-density polymer film or a low-density polymer film having a film thickness of 10 μm or more and 200 μm or less.
[5] A cable provided with the insulated wire according to any one of [1] to [4].
本発明によれば、難燃剤として金属水酸化物を多く含む難燃層を有していても、細径化が可能な絶縁電線及びケーブルを提供することができる。 According to the present invention, it is possible to provide an insulated electric wire and a cable capable of reducing the diameter even if the flame retardant layer containing a large amount of metal hydroxide is provided as a flame retardant.
〔絶縁電線〕
本発明の実施形態に係る絶縁電線は、導体と、前記導体の外周に設けられた、金属水酸化物を含有する難燃内層と、前記難燃内層の外周に設けられた水分浸入防止層とを備える。
[Insulated wire]
The insulated wire according to the embodiment of the present invention includes a conductor, a flame-retardant inner layer containing a metal hydroxide provided on the outer periphery of the conductor, and a moisture infiltration prevention layer provided on the outer periphery of the flame-retardant inner layer. To be equipped.
図１は、本発明の実施の形態に係る絶縁電線の一例を示す横断面図である。
図１に示すように、本実施の形態に係る絶縁電線１０は、導体１と、導体１の外周に設けられた、金属水酸化物を含有する難燃内層２と、難燃内層２の外周に設けられた水分浸入防止層３とを備える。水分浸入防止層３の外周に設けられた難燃外層４を更に備えることが好ましい。
FIG. 1 is a cross-sectional view showing an example of an insulated wire according to an embodiment of the present invention.
As shown in FIG. 1, the insulated wire 10 according to the present embodiment includes a conductor 1, a flame-retardant inner layer 2 containing a metal hydroxide provided on the outer periphery of the conductor 1, and an outer periphery of the flame-retardant inner layer 2. The moisture intrusion prevention layer 3 provided in the above is provided. It is preferable to further provide a flame-retardant outer layer 4 provided on the outer periphery of the moisture intrusion prevention layer 3.
（導体１）
導体１は、汎用の材料、例えば、純銅や錫めっき銅、アルミニウム等からなる。導体１は、図１のように１本である場合に限られず、複数本の素線を撚合せたものであってもよい。例えば、錫めっき軟銅撚線を好適に使用することができる。導体１としては、例えば外径０．１５〜７ｍｍφ程度の導体を使用することができる。
(Conductor 1)
The conductor 1 is made of a general-purpose material, for example, pure copper, tin-plated copper, aluminum, or the like. The conductor 1 is not limited to the case of one conductor as shown in FIG. 1, and may be a conductor 1 obtained by twisting a plurality of strands. For example, tin-plated annealed copper stranded wire can be preferably used. As the conductor 1, for example, a conductor having an outer diameter of about 0.15 to 7 mmφ can be used.
（難燃内層２）
難燃内層２は、難燃剤として金属水酸化物を含有する。
(Flame-retardant inner layer 2)
The flame retardant inner layer 2 contains a metal hydroxide as a flame retardant.
金属水酸化物としては、例えば、水酸化マグネシウム、水酸化アルミニウム、ハイドロタルサイト、カルシウムアルミネート水和物、水酸化カルシウム、水酸化バリウム等が挙げられる。 Examples of the metal hydroxide include magnesium hydroxide, aluminum hydroxide, hydrotalcite, calcium aluminate hydrate, calcium hydroxide, barium hydroxide and the like.
金属水酸化物の含量は、難燃内層２を構成するベースポリマー１００質量部に対して、８０質量部以上２５０質量部以下であることが好ましく、１５０質量部以上２５０質量部以下であることがより好ましい。 The content of the metal hydroxide is preferably 80 parts by mass or more and 250 parts by mass or less, and preferably 150 parts by mass or more and 250 parts by mass or less with respect to 100 parts by mass of the base polymer constituting the flame-retardant inner layer 2. More preferred.
難燃内層２を構成するベースポリマーとしては、汎用の材料、例えば、塩化ビニル樹脂、ふっ素樹脂、ポリエチレン等のポリオレフィンを用いることができる。 As the base polymer constituting the flame-retardant inner layer 2, general-purpose materials such as vinyl chloride resin, fluororesin, and polyolefin such as polyethylene can be used.
塩化ビニル樹脂としては、塩化ビニルの単独重合体（すなわちポリ塩化ビニル）のほか、塩化ビニルと他の共重合可能なモノマーとの共重合体（例えば塩化ビニル−酢酸ビニル共重合体）及びこれらの混合物が挙げられる。塩化ビニル樹脂は、必要に応じて、重合度の異なるものを２種以上ブレンドして用いても良い。 The vinyl chloride resin includes a homopolymer of vinyl chloride (that is, polyvinyl chloride), a copolymer of vinyl chloride and another copolymerizable monomer (for example, a vinyl chloride-vinyl acetate copolymer), and these. Examples include mixtures. As the vinyl chloride resin, if necessary, two or more kinds of vinyl chloride resins having different degrees of polymerization may be blended and used.
ふっ素樹脂としては、テトラフルオロエチレン・パーフルオロアルキルビニルエーテル共重合体（ＰＦＡ）、テトラフルオロエチレン・ヘキサフルオロプロピレン共重合体（ＦＥＰ）、ポリテトラフルオロエチレン（ＰＴＦＥ）、エチレン・テトラフルオロエチレン・ヘキサフルオロプロピレン共重合体（ＥＦＥＰ）及びエチレン・テトラフルオロエチレン共重合体（ＥＴＦＥ）等を用いることができる。これらは、１種で用いても併用してもよい。上記ふっ素樹脂は、架橋させることが望ましい。 Examples of the fluororesin include tetrafluoroethylene / perfluoroalkyl vinyl ether copolymer (PFA), tetrafluoroethylene / hexafluoropropylene copolymer (FEP), polytetrafluoroethylene (PTFE), and ethylene / tetrafluoroethylene / hexafluoro. A propylene copolymer (EFEP), an ethylene / tetrafluoroethylene copolymer (ETFE), or the like can be used. These may be used alone or in combination. It is desirable that the fluororesin is crosslinked.
ポリオレフィンとしては、ポリエチレンやポリプロピレン等が挙げられる。 Examples of the polyolefin include polyethylene and polypropylene.
難燃内層２を構成するベースポリマーには、必要に応じて、その他の難燃剤、難燃助剤、充填剤、架橋剤、架橋助剤、可塑剤、安定剤、紫外線吸収剤、光安定剤、滑剤、酸化防止剤、着色剤、加工性改良剤、無機充填剤、相溶化剤、発泡剤、帯電防止剤等の添加物を加えることも可能である。 The base polymer constituting the flame retardant inner layer 2 may contain other flame retardants, flame retardants, fillers, cross-linking agents, cross-linking aids, plasticizers, stabilizers, ultraviolet absorbers, and light stabilizers, if necessary. , Lubricants, antioxidants, colorants, processability improvers, inorganic fillers, compatibilizers, foaming agents, antistatic agents and the like can also be added.
難燃内層２は、例えば、金属水酸化物系フィラーを充填させた上記ベースポリマーを押出被覆等の成形手段により導体１の外周に被覆することで形成できる。その後、電子線照射等の方法により架橋を施しても良い。 The flame-retardant inner layer 2 can be formed, for example, by coating the outer periphery of the conductor 1 with the base polymer filled with a metal hydroxide-based filler by a molding means such as extrusion coating. After that, cross-linking may be performed by a method such as electron beam irradiation.
難燃内層２の厚みは、例えば、３０μｍ以上３００μｍ以下とすることが好ましい。 The thickness of the flame-retardant inner layer 2 is preferably, for example, 30 μm or more and 300 μm or less.
本実施の形態においては、難燃内層２を、単層で構成してもよく、また、多層構造とすることもできる。さらに、必要に応じて、セパレータ、編組等を施してもよい。 In the present embodiment, the flame-retardant inner layer 2 may be composed of a single layer or may have a multi-layer structure. Further, if necessary, a separator, braid, or the like may be applied.
（水分浸入防止層３）
難燃内層２の外周に設けられた水分浸入防止層３は、外部から難燃内層２へ水分が浸入することを防止する機能を有する。例えば、ＪＩＳ Ｋ７１２９ 感湿センサー法（Ｌｙｓｓｙ法）にて測定した水蒸気透過率が５０ｇ・ｍ-2・ｄａｙ以下となる材料・層厚を選択することが好適であり、４０ｇ・ｍ-2・ｄａｙ以下となる材料・層厚を選択することがより好適であり、３０ｇ・ｍ-2・ｄａｙ以下となる材料・層厚を選択することが更に好適である。
(Moisture intrusion prevention layer 3)
The moisture intrusion prevention layer 3 provided on the outer periphery of the flame-retardant inner layer 2 has a function of preventing moisture from infiltrating into the flame-retardant inner layer 2 from the outside. For example, it is preferable to select a material / layer thickness having a water vapor transmittance of 50 g · m-2 · day or less measured by the JIS K7129 humidity sensor method (Lysy method), and it is preferable to select a material / layer thickness of 40 g · m- 2 · day. It is more preferable to select the following material / layer thickness, and it is further preferable to select the material / layer thickness of 30 g · m-2 · day or less.
水分浸入防止層３は、上記機能を有していれば、その材料等は特に限定されるものではないが、例えば、無機物膜、金属膜、高密度高分子膜、低密度高分子膜からなることが好ましい。これらは１種のみならず、２種以上を用いても良い。 The material of the moisture infiltration prevention layer 3 is not particularly limited as long as it has the above-mentioned function, but is composed of, for example, an inorganic film, a metal film, a high-density polymer film, and a low-density polymer film. Is preferable. These are not limited to one type, and two or more types may be used.
無機物膜は、例えば、ＳｉＯ2、Ａｌ2Ｏ3、又はＴｉＯ2からなる。無機物膜の膜厚は、５μｍ未満であることが好ましく、１μｍ以下であることがより好ましく、０．３μｍ以下であることが更に好ましく、０．１５μｍ以下であることが最も好ましい。また、膜厚の下限は、１０ｎｍ以上であることが好ましく、３０ｎｍ以上であることがより好ましく、５０ｎｍ以上であることが更に好ましく、７０ｎｍ以上であることが最も好ましい。膜厚５μｍ以上では、電線やケーブルの柔軟性が十分でなく、また、膜が剥離する可能性がある。 The inorganic film is composed of, for example, SiO 2 , Al 2 O 3 , or TiO 2 . The film thickness of the inorganic film is preferably less than 5 μm, more preferably 1 μm or less, further preferably 0.3 μm or less, and most preferably 0.15 μm or less. The lower limit of the film thickness is preferably 10 nm or more, more preferably 30 nm or more, further preferably 50 nm or more, and most preferably 70 nm or more. If the film thickness is 5 μm or more, the flexibility of the electric wire or cable is not sufficient, and the film may peel off.
上記無機物膜は、例えば、アルコキシシラン等の無機アルコキシから生成される。難燃内層２の外周に材料を吹き付ける等により設けることができる。 The inorganic film is produced from an inorganic alkoxy such as alkoxysilane. It can be provided by spraying a material on the outer periphery of the flame-retardant inner layer 2.
金属膜は、例えば、Ａｕ、Ａｇ、Ｃｕ、Ａｌ、Ｎｉ、又はＳｎからなる。好ましい膜厚は、上記無機物膜と同様である。膜厚５μｍ以上では、電線やケーブルの柔軟性が十分でなく、また、膜が剥離する可能性がある。 The metal film is made of, for example, Au, Ag, Cu, Al, Ni, or Sn. The preferable film thickness is the same as that of the above-mentioned inorganic film. If the film thickness is 5 μm or more, the flexibility of the electric wire or cable is not sufficient, and the film may peel off.
上記金属膜は、例えば、スパッタにて生成される。また、無電解めっきで生成することもできる。 The metal film is produced, for example, by sputtering. It can also be produced by electroless plating.
高密度高分子膜は、例えば、高密度ポリエチレン（ＨＤＰＥ）、ポリテトラフルオロエチレン（ＰＴＦＥ）、塩素系樹脂からなる。低密度高分子膜は、例えば、低密度ポリエチレン（ＬＤＰＥ）からなる。高密度高分子膜及び低密度高分子膜の膜厚は、１０μｍ以上２００μｍ以下であることが好ましく、３０μｍ以上１８０μｍ以下であることがより好ましく、５０μｍ以上１５０μｍ以下であることが更に好ましい。 The high-density polymer film is made of, for example, high-density polyethylene (HDPE), polytetrafluoroethylene (PTFE), or a chlorine-based resin. The low density polymer membrane is made of, for example, low density polyethylene (LDPE). The film thickness of the high-density polymer film and the low-density polymer film is preferably 10 μm or more and 200 μm or less, more preferably 30 μm or more and 180 μm or less, and further preferably 50 μm or more and 150 μm or less.
上記高密度高分子膜は、押出被覆により形成できる。高密度高分子テープを巻き付けて形成してもよい。 The high-density polymer film can be formed by extrusion coating. It may be formed by wrapping a high-density polymer tape.
（難燃外層４）
難燃外層４は、難燃剤として金属水酸化物を含有することが好ましい。
(Flame-retardant outer layer 4)
The flame retardant outer layer 4 preferably contains a metal hydroxide as a flame retardant.
金属水酸化物としては、前述したものを用いることができる。 As the metal hydroxide, those described above can be used.
金属水酸化物の含量は、難燃外層４を構成するベースポリマー１００質量部に対して、８０質量部以上２５０質量部以下であることが好ましく、１５０質量部以上２５０質量部以下であることがより好ましい。 The content of the metal hydroxide is preferably 80 parts by mass or more and 250 parts by mass or less, and preferably 150 parts by mass or more and 250 parts by mass or less with respect to 100 parts by mass of the base polymer constituting the flame-retardant outer layer 4. More preferred.
難燃外層４を構成するベースポリマーとしては、難燃内層２と同様の前述したものを用いることができる。 As the base polymer constituting the flame-retardant outer layer 4, the above-mentioned one similar to the flame-retardant inner layer 2 can be used.
難燃外層４は、難燃内層２と同一の樹脂組成物からなることが好ましい。 The flame-retardant outer layer 4 is preferably made of the same resin composition as the flame-retardant inner layer 2.
難燃外層４は、例えば、金属水酸化物系フィラーを充填させたベースポリマーを押出被覆等の成形手段により水分浸入防止層３の外周に被覆することで形成できる。その後、電子線照射等の方法により架橋を施しても良い。 The flame-retardant outer layer 4 can be formed, for example, by coating the outer periphery of the moisture infiltration prevention layer 3 with a base polymer filled with a metal hydroxide-based filler by a molding means such as extrusion coating. After that, cross-linking may be performed by a method such as electron beam irradiation.
難燃外層４の厚みは、例えば、５０μｍ以上４５０μｍ以下とすることが好ましい。難燃内層２と難燃外層４の合計厚さが、従来の絶縁電線の難燃層と同程度の厚さであれば良いので、電気絶縁層を別途、設ける必要がない分、本実施の形態に係る絶縁電線１０は細径化に適している。 The thickness of the flame-retardant outer layer 4 is preferably, for example, 50 μm or more and 450 μm or less. Since the total thickness of the flame-retardant inner layer 2 and the flame-retardant outer layer 4 may be as thick as the flame-retardant layer of the conventional insulated wire, it is not necessary to separately provide an electrical insulating layer. The insulated wire 10 according to the form is suitable for reducing the diameter.
本実施の形態においては、難燃外層４を、単層で構成してもよく、また、多層構造とすることもできる。さらに、必要に応じて、セパレータ、編組等を施してもよい。 In the present embodiment, the flame-retardant outer layer 4 may be composed of a single layer or may have a multi-layer structure. Further, if necessary, a separator, braid, or the like may be applied.
絶縁電線１０は、本発明の効果を奏する範囲内において、上記以外の層を備えていても良い。例えば、導体１と難燃内層２の間や、難燃内層２と水分浸入防止層３の間に、難燃剤を含有していないポリエチレン等からなる電気絶縁層が設けられていても良い。但し、細径化の観点からは、設けない方が好ましく、設けるとしても、層厚３００μｍ以下とすることが好ましく、２００μｍ以下とすることがより好ましく、１５０μｍ以下とすることが更に好ましい。 The insulated wire 10 may include a layer other than the above as long as the effect of the present invention is exhibited. For example, an electrically insulating layer made of polyethylene or the like that does not contain a flame retardant may be provided between the conductor 1 and the flame retardant inner layer 2 or between the flame retardant inner layer 2 and the moisture infiltration prevention layer 3. However, from the viewpoint of reducing the diameter, it is preferable not to provide it, and even if it is provided, the layer thickness is preferably 300 μm or less, more preferably 200 μm or less, and further preferably 150 μm or less.
〔ケーブル〕
本発明の実施形態に係るケーブルは、本発明の実施形態に係る上記絶縁電線を備えることを特徴とする。
〔cable〕
The cable according to the embodiment of the present invention is characterized by including the above-mentioned insulated electric wire according to the embodiment of the present invention.
本実施の形態に係るケーブルは、例えば、絶縁電線１０と、その外周に押出被覆されたシースとを備える。絶縁電線１０は多芯撚り線としてもよい。 The cable according to the present embodiment includes, for example, an insulated electric wire 10 and a sheath extruded and coated on the outer periphery thereof. The insulated wire 10 may be a multi-core stranded wire.
〔本発明の実施形態の効果〕
本発明の実施形態によれば、水分浸入防止層３及びその内側に難燃内層２を設けたことにより、難燃内層２が電気絶縁層としても機能するため、電気絶縁層を別途設ける必要が無いので、難燃剤として金属水酸化物を多く含む難燃層を有していても、細径化が可能な絶縁電線及びケーブルを提供することができる。
[Effects of Embodiments of the present invention]
According to the embodiment of the present invention, since the flame retardant inner layer 2 also functions as an electrical insulating layer by providing the moisture infiltration prevention layer 3 and the flame retardant inner layer 2 inside the layer 3, it is necessary to separately provide the electrical insulating layer. Therefore, it is possible to provide an insulated electric wire and a cable capable of reducing the diameter even if the flame retardant layer containing a large amount of metal hydroxide is provided as a flame retardant.
以下に、本発明を実施例及び比較例に基づいて更に詳しく説明するが、本発明はこれらに限定されるものではない。 Hereinafter, the present invention will be described in more detail based on Examples and Comparative Examples, but the present invention is not limited thereto.
図１の構造の絶縁電線１０を下記の通りの方法で製造し、評価を行なった。 The insulated wire 10 having the structure shown in FIG. 1 was manufactured by the following method and evaluated.
〔絶縁電線の作製〕
外径１．２３ｍｍの錫めっき導体（径０．１８ｍｍの素線３７本を撚り合わせた撚り導体）の外周に、４０ｍｍ押出機で難燃内層２を被覆し、難燃内層２上に水分浸入防止層３を被覆し、水分浸入防止層３上に難燃外層４を被覆した。難燃内層２及び難燃外層４の材料としては、下記表１に示す配合の樹脂組成物を用いた。水分浸入防止層３の材料としては、実施例１〜４、７及び８は高密度ポリエチレン（（株）プライムポリマー製、商品名：ハイゼックス（登録商標）5305E、MFR:0.8g/10min、密度：0.951/cm3）１００質量部、ヒンダードフェノール系酸化防止剤（ＢＡＳＦ社製、商品名：イルガノックス1010）１質
量部を混練した樹脂組成物、実施例５及び６は低密度ポリエチレン（宇部丸善ポリエチレン（株）製、商品名：ＵＢＥポリエチレン（登録商標）UBE C450、MFR:1g/10min、密度：0.921/cm3）１００質量部、ヒンダードフェノール系酸化防止剤（ＢＡＳＦ社製、商品名：イルガノックス1010）１質量部を混練した樹脂組成物を用いた。各層の厚さは、下記表２に記載の通りとなるように成形した。
[Manufacturing of insulated wires]
A flame-retardant inner layer 2 is coated on the outer periphery of a tin-plated conductor having an outer diameter of 1.23 mm (a twisted conductor obtained by twisting 37 strands having a diameter of 0.18 mm) with a 40 mm extruder, and moisture penetrates onto the flame-retardant inner layer 2. The prevention layer 3 was coated, and the flame-retardant outer layer 4 was coated on the moisture infiltration prevention layer 3. As the materials for the flame-retardant inner layer 2 and the flame-retardant outer layer 4, the resin compositions having the formulations shown in Table 1 below were used. As the material of the moisture infiltration prevention layer 3, Examples 1 to 4, 7 and 8 are made of high-density polyethylene (manufactured by Prime Polymer Co., Ltd., trade name: Hi-Zex (registered trademark) 5305E, MFR: 0.8 g / 10 min, density: 0.951 / cm 3 ) 100 parts by mass of hindered phenolic antioxidant (manufactured by BASF, trade name: Irganox 1010) 1 part by mass of a resin composition kneaded, Examples 5 and 6 are low density polyethylene (Ube Maruzen) Made by Polyethylene Co., Ltd., Product name: UBE Polyethylene (registered trademark) UBE C450, MFR: 1g / 10min, Density: 0.921 / cm 3 ) 100 parts by mass, Hindered phenolic antioxidant (BASF, product name: Ilganox 1010) A resin composition kneaded with 1 part by mass was used. The thickness of each layer was molded as shown in Table 2 below.
〔水分浸入防止層３の水蒸気透過率の測定〕
測定サンプルとして各実施例の水分浸入防止層３に相当する膜を板ガラス上に作製した。水蒸気透過率は、ＪＩＳ Ｋ７１２９ 感湿センサー法（Ｌｙｓｓｙ法）にて測定した。
[Measurement of water vapor permeability of moisture infiltration prevention layer 3]
As a measurement sample, a film corresponding to the water infiltration prevention layer 3 of each example was prepared on a plate glass. The water vapor transmittance was measured by the JIS K7129 humidity sensor method (Lyssy method).
〔絶縁電線の評価〕
作製した絶縁電線を次に示す方法で評価した。評価結果を表２に示す。
[Evaluation of insulated wires]
The prepared insulated wire was evaluated by the following method. The evaluation results are shown in Table 2.
（１）電気特性試験
EN50305.6.7に準拠し、３００Ｖ直流安定性試験を実施した。２４０時間短絡しなかったものを合格とし、２４０時間未満で短絡したものを不合格とした。
(1) Electrical property test
A 300V DC stability test was conducted in accordance with EN50305.6.7. Those that did not short-circuit for 240 hours were regarded as acceptable, and those that were short-circuited in less than 240 hours were rejected.
（２）難燃性試験
難燃性は、以下のＶＦＴ及びＶＴＦＴにて評価した。
（ＶＦＴ）
垂直燃焼試験（ＶＦＴ＝Ｖｅｒｔｉｃａｌ Ｆｌａｍｅ Ｔｅｓｔ）を行なった。長さ６００ｍｍの絶縁電線を垂直にて保ち、絶縁電線に炎を６０秒間当てた。炎を取り去った後、３０秒以内に消火したものを合格（◎）とし、３１秒以上６０秒以内に消火したものを合格（○）とし、６０秒以内に消火しなかったものを不合格（×）とした。
（ＶＴＦＴ）
ＥＮ５０２６６−２−４に基づき、垂直トレイ燃焼試験（ＶＴＦＴ＝Ｖｅｒｔｉｃａｌ Ｔｒａｙ Ｆｌａｍｅ Ｔｅｓｔ）を実施した。具体的には、全長３．５ｍの絶縁電線を７本撚りの１束とし、１１束を等間隔で垂直に並べ、絶縁電線の下方よりバーナで２０分間燃焼させた後、自己消炎後、炭化長が下端部より２．５ｍ以下を目標とした。炭化長が１．５ｍ以下であれば、合格（◎）とし、炭化長が１．５ｍを超えて２．５ｍ以下であれば、合格（〇）とし、２．５ｍを超えた場合、不合格（×）とした。
(2) Flame retardancy test The flame retardancy was evaluated by the following VFT and VTFT.
(VFT)
A vertical combustion test (VFT = Vertical Flame Test) was performed. An insulated wire having a length of 600 mm was kept vertical, and the insulated wire was exposed to a flame for 60 seconds. Those that extinguished the fire within 30 seconds after removing the flame were accepted (◎), those that were extinguished within 31 seconds or more and 60 seconds were accepted (○), and those that were not extinguished within 60 seconds were rejected (◎). ×).
(VTFT)
A vertical tray combustion test (VTFT = Vertical Ray Flame Test) was carried out based on EN50266-2-4. Specifically, an insulated wire with a total length of 3.5 m is made into one bundle of 7 twists, 11 bundles are arranged vertically at equal intervals, burned with a burner from below the insulated wire for 20 minutes, self-extinguished, and then carbonized. The target length is 2.5 m or less from the lower end. If the carbonization length is 1.5 m or less, it is passed (◎), if the carbonization length is more than 1.5 m and 2.5 m or less, it is passed (〇), and if it exceeds 2.5 m, it is rejected. It was marked as (x).
〔総合判定〕
総合判定として、上記試験のすべての評価が合格のものを合格（◎）とし、直流安定性試験及びＶＦＴの評価が合格でありＶＴＦＴが不合格のものを合格（○）とし、直流安定性試験とＶＦＴのいずれかが不合格のものを不合格（×）とした。
〔Comprehensive judgment〕
As a comprehensive judgment, those that pass all the evaluations of the above tests are regarded as passing (◎), those that pass the DC stability test and VFT evaluation and fail VFTT are regarded as passing (○), and the DC stability test is performed. And VFT that failed were regarded as rejected (x).
なお、本発明は、上記実施の形態及び実施例に限定されず種々に変形実施が可能である。 The present invention is not limited to the above-described embodiments and examples, and various modifications can be made.
１０：絶縁電線
１：導体、２：難燃内層、３：水分浸入防止層、４：難燃外層
10: Insulated wire 1: Conductor 2: Flame-retardant inner layer 3: Moisture infiltration prevention layer 4: Flame-retardant outer layer
Claims (2)
前記水分浸入防止層の外周に設けられた難燃外層を備える絶縁電線であって、
前記難燃外層は、ベースポリマと金属水酸化物を含み、前記ベースポリマ１００質量部に対して前記金属水酸化物を１５０質量部以上２５０質量部以下含有し、
前記水分浸入防止層が、膜厚１０μｍ以上２００μｍ以下の高密度高分子膜又は低密度高分子膜からなる絶縁電線。 A conductor, a flame-retardant inner layer containing a metal hydroxide provided on the outer periphery of the conductor, and a moisture infiltration prevention layer provided on the outer periphery of the flame-retardant inner layer are provided.
An insulated wire provided with a flame-retardant outer layer provided on the outer periphery of the moisture intrusion prevention layer.
The flame-retardant outer layer contains a base polymer and a metal hydroxide, and contains 150 parts by mass or more and 250 parts by mass or less of the metal hydroxide with respect to 100 parts by mass of the base polymer.
An insulated wire in which the moisture infiltration prevention layer is made of a high-density polymer film or a low-density polymer film having a film thickness of 10 μm or more and 200 μm or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019120614A JP6954957B2 (en) | 2018-03-09 | 2019-06-28 | Insulated wires and cables |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018042459A JP6781180B2 (en) | 2018-03-09 | 2018-03-09 | Insulated wires and cables |
| JP2019120614A JP6954957B2 (en) | 2018-03-09 | 2019-06-28 | Insulated wires and cables |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2018042459A Division JP6781180B2 (en) | 2018-03-09 | 2018-03-09 | Insulated wires and cables |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2019160811A JP2019160811A (en) | 2019-09-19 |
| JP6954957B2 true JP6954957B2 (en) | 2021-10-27 |
Family
ID=67996597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2019120614A Active JP6954957B2 (en) | 2018-03-09 | 2019-06-28 | Insulated wires and cables |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP6954957B2 (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002203434A (en) * | 2000-12-28 | 2002-07-19 | Hitachi Cable Ltd | Water-impervious rodent-repellent cable |
| JP2007161960A (en) * | 2005-12-16 | 2007-06-28 | Fujikura Ltd | Anti-rat, abrasion-resistant and flame-retardant resin composition and anti-rat insulating electric wire for automobile |
| JP5199602B2 (en) * | 2007-04-27 | 2013-05-15 | 株式会社オートネットワーク技術研究所 | Insulated wire and wire harness |
| JP5531971B2 (en) * | 2010-10-13 | 2014-06-25 | 日立金属株式会社 | Electric wires and cables using flame retardant resin composition |
| JP6376464B2 (en) * | 2014-06-19 | 2018-08-22 | 日立金属株式会社 | Insulated wire |
-
2019
- 2019-06-28 JP JP2019120614A patent/JP6954957B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| JP2019160811A (en) | 2019-09-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10643762B2 (en) | Insulated wire and cable | |
| EP3264424A1 (en) | Insulated wire | |
| JP2010186585A (en) | Fluorine-contained elastomer covered cable | |
| US11367541B2 (en) | Fire resistant data communication cable | |
| JP6022514B2 (en) | Vinyl chloride resin composition for cable sheath material and highly flame retardant cable | |
| JP6954957B2 (en) | Insulated wires and cables | |
| JP6781180B2 (en) | Insulated wires and cables | |
| JP5388158B2 (en) | Fluorine-containing elastomer covered wire | |
| JP6756691B2 (en) | Insulated wire | |
| JP5176510B2 (en) | Fluorine-containing elastomer covered wire | |
| JP6388216B2 (en) | Insulated wires and cables | |
| JP6194842B2 (en) | Fluorine-containing elastomer composition, and insulated wire and cable using the same | |
| JP5454666B2 (en) | Fluorine-containing elastomer covered wire | |
| JP2017224557A (en) | Insulated wire and cable | |
| US20230144417A1 (en) | Communication cable and wire harness | |
| JP6756693B2 (en) | Insulated wire | |
| JP6795481B2 (en) | Insulated wire | |
| JP6860833B2 (en) | Flame-retardant insulated wires and flame-retardant cables | |
| JP6756692B2 (en) | Insulated wire | |
| JP2018078045A (en) | Insulated wire | |
| JP7037280B2 (en) | Insulated wire | |
| US11034825B2 (en) | Flame retardant and thermally stable compositions for wire and cable | |
| EP3480829B1 (en) | Insulated electric wire | |
| JP6717073B2 (en) | Insulated wire | |
| JP4712355B2 (en) | Low outgas cable |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20190628 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20200605 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20200618 |
|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20200820 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20201112 |
|
| C60 | Trial request (containing other claim documents, opposition documents) |
Free format text: JAPANESE INTERMEDIATE CODE: C60 Effective date: 20201112 |
|
| A911 | Transfer to examiner for re-examination before appeal (zenchi) |
Free format text: JAPANESE INTERMEDIATE CODE: A911 Effective date: 20201120 |
|
| C21 | Notice of transfer of a case for reconsideration by examiners before appeal proceedings |
Free format text: JAPANESE INTERMEDIATE CODE: C21 Effective date: 20201126 |
|
| A912 | Re-examination (zenchi) completed and case transferred to appeal board |
Free format text: JAPANESE INTERMEDIATE CODE: A912 Effective date: 20201204 |
|
| C211 | Notice of termination of reconsideration by examiners before appeal proceedings |
Free format text: JAPANESE INTERMEDIATE CODE: C211 Effective date: 20201210 |
|
| C22 | Notice of designation (change) of administrative judge |
Free format text: JAPANESE INTERMEDIATE CODE: C22 Effective date: 20210225 |
|
| C22 | Notice of designation (change) of administrative judge |
Free format text: JAPANESE INTERMEDIATE CODE: C22 Effective date: 20210510 |
|
| C13 | Notice of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: C13 Effective date: 20210527 |
|
| C19 | Decision taken to dismiss amendment |
Free format text: JAPANESE INTERMEDIATE CODE: C19 Effective date: 20210610 |
|
| C30A | Notification sent |
Free format text: JAPANESE INTERMEDIATE CODE: C3012 Effective date: 20210610 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20210716 |
|
| C23 | Notice of termination of proceedings |
Free format text: JAPANESE INTERMEDIATE CODE: C23 Effective date: 20210826 |
|
| C03 | Trial/appeal decision taken |
Free format text: JAPANESE INTERMEDIATE CODE: C03 Effective date: 20210930 |
|
| C30A | Notification sent |
Free format text: JAPANESE INTERMEDIATE CODE: C3012 Effective date: 20210930 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20210930 |
|
| R150 | Certificate of patent or registration of utility model |
Ref document number: 6954957 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313531 |
|
| S533 | Written request for registration of change of name |
Free format text: JAPANESE INTERMEDIATE CODE: R313533 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |